package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import java.util.Properties;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    private static final Logger log = LoggerFactory.getLogger(EmployeeServiceImpl.class);

    @Autowired
    private EmployeeMapper employeeMapper;
    @Autowired
    private Properties pageHelperProperties;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //1、获取参数,封装对象,属性拷贝
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        //2.设置账号状态，状态常量 StatusConstant.ENABLE
        employee.setStatus(StatusConstant.ENABLE);

        //3.设置初识密码123456，需要进行md5加密处理，也使用密码常量 PasswordConstant.DEFAULT_PASSWORD.getBytes()
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //4.设置当前记录创建时间和修改时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //5.设置当前记录创建人id和修改人id
       // employee.setCreateUser(BaseContext.getCurrentId());
       // employee.setUpdateUser(BaseContext.getCurrentId());

        //6.保存数据
        employeeMapper.insert(employee);
        log.info("新增员工成功");

    }


    /**
     * 员工分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee where name like '%?%' limit ?,?
        //1、分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        //2、获取分页查询结果
        Page<Employee> page =employeeMapper.pageQuery(employeePageQueryDTO);

        //3.封装结果并返回
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 修改员工状态
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        //sql：update employee set status = ?,updateTime = ? where id = ?,使用动态SQL
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        //employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
        log.info("修改员工状态成功");

    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        //密码设置为******
        employee.setPassword("******");
        log.info("根据id查询员工成功");
        return employee;
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     *
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        //1、获取参数,封装对象,属性拷贝
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        //2.设置当前记录修改时间
        //employee.setUpdateTime(LocalDateTime.now());

        //3.设置当前记录修改人id
        //employee.setUpdateUser(BaseContext.getCurrentId());

        //4.修改数据,注意  调用的Mapper层依旧是 update 方法
        employeeMapper.update(employee);
        log.info("修改员工信息成功");
    }

}
